Analysing the rate of land use and land-cover changes in Gambari Forest Reserve, Nigeria

S/N	Data Sets	Resolution/ Scale	Year of Production	Date of Acquisition	Source
1	Landsat 5	30 M	1984	18/12/1984	USGS
2	Landsat 7	30 M	2004	06/02/2004	USGS
3	Landsat 8 OLI	30 M	2020	15/02/2020	USGS
4	Gambari Forest Reserve boundary map	1:50,000	2015	23/11/2018	Adedeji et al. [18]

Table 2:

LULC classification scheme

S/N	Code	LULC Classification Category	Definition of Terms
1	DF	Dense forest	Area with dense intensity of forest with thick closed canopy
2	LF	Light forest	Area with low intensity of forest with light closed canopy
3	NF	Non-forest	Area covered with shrubs and grasses with no canopy

1 GPS is used for navigation, location of sample plots and recording of coordinate points. Ground distance is measured by surveyors using a tape.

Table 3:

LULC distribution of Gambari Forest in 1984 showing area (km²) of the LULC classes

Classes	Area (%)	Area (km²)
Non-forest	11.20	14.70
Light forest	65.40	79.20
Dense forest	23.40	31.70
TOTAL	100.00	125.60

Land-cover classification of Gambari Forest in 1984.

Table 4:

LULC distribution of Gambari Forest in 2004 showing area (km²) of the LULC classes

Classes	Area (%)	Area (km²)
Non-forest	25.10	37.80
Light forest	43.70	51.20
Dense forest	31.20	36.60
TOTAL	100.00	125.60

Land-cover classification of Gambari Forest in 2004.

Table 5:

LULC distribution of Gambari Forest in 2020 showing area (km²) of the LULC classes

Classes	Area (%)	Area (km²)
Non-forest	4.10	2.60
Dense forest	54.40	72.80
Light forest	41.50	51.20
TOTAL	100.00	125.60

Land-cover classification of Gambari Forest in 2020.

Table 6:

Changes in land cover of Gambari Forest Reserve from 1984 to 2004

Classes	Area in 1984 (km²)	Area in 1984(%)	Area in 2004 (km²)	Area in 2004 (%)	Percentage Change from 1984–2004
NF	14.70	11.20	37.80	25.10	13.90
LF	79.20	65.40	51.20	43.70	-21.70
DF	31.70	23.40	36.60	31.20	7.80

Table 7:

Changes in land cover of Gambari Forest Reserve from 2004 to 2020

Classes	Area in 2004 (km²)	Area in 2004 (%)	Area in 2020 (km²)	Area in 2020 (%)	Percentage Change from 2004–2020
NF	37.80	25.1	2.60	4.10	-21.00
LF	51.20	43.7	51.20	41.50	-2.20
DF	36.60	31.20	72.80	54.40	23.20

Table 8:

Changes in land cover of Gambari Forest Reserve from 1984 to 2020

Classes	Area in 1984 (km²)	Area in 1984(%)	Area in 2020 (km²)	Area in 2020 (%)	Percentage Change from 1984–2020
NF	14.70	11.20	2.60	4.10	−7.10
LF	79.20	65.40	51.20	41.50	−23.90
DF	31.70	23.40	72.80	54.40	31.00

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DOI: https://doi.org/10.2478/rmzmag-2021-0014 | Journal eISSN: 1854-7400

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Language: English, Slovenian

Page range: 91 - 98

Submitted on: Apr 17, 2021

Accepted on: Apr 21, 2021

Published on: Sep 4, 2023

Published by: Sciendo

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

geospatial technique,

LULC,

Related subjects:

Databases and data mining,

Geosciences,

Geodesy,

Geology and mineralogy,

Materials sciences,

Materials characterization and properties

© 2023 J. O. Mephors, O. D. Onafeso, O. S. Afolabi, O. J. Aigbokhan, I. S. Adamu, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 68 (2021): Issue 2 (December 2021)

Analysing the rate of land use and land-cover changes in Gambari Forest Reserve, Nigeria

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